CN208552095U

CN208552095U - Cleaning appliance

Info

Publication number: CN208552095U
Application number: CN201721418893.7U
Authority: CN
Inventors: J.D.科尔曼; A.N.沃尔顿; L.W.戴维森; R.L.特威迪
Original assignee: Dyson Ltd
Current assignee: Dyson Technology Ltd; Dyson Ltd
Priority date: 2016-10-28
Filing date: 2017-10-30
Publication date: 2019-03-01
Anticipated expiration: 2027-10-30
Also published as: WO2018078333A1; GB2555450A; JP2018069072A; EP3531961A1; JP6549672B2; GB2555450B; GB201618247D0; US20180116774A1; CN107997841A; GB2555450A8; MX2019004866A; BR112019008479A2; CN107997841B

Abstract

A kind of tooth cleaning device, including nozzle, the nozzle have fluid cavity, fluid outlet and the channel extended between fluid cavity and fluid outlet.Water memory provides water to pump, and the jet stream pumped for generating pressure (hydraulic) water is supplied to nozzle by fluid conduit systems.After the jet stream of water is transported to user's tooth, before one lower water jet is generated by pump, valve returns to fluid cavity from channel suction water, to prevent water from dripping from fluid outlet.Meanwhile air can be drawn into fluid cavity, such as by fluid outlet, for being mixed with one lower water jet, to generate the fluid jet for being transported to user's tooth.

Description

Cleaning appliance

Technical field

The utility model relates to a kind of cleaning appliances.The cleaning appliance is preferably hand-held cleaner tool, and preferably table Surface treatment utensil.In the preferred embodiment of the utility model, which is tooth cleaning device.In a preferred embodiment, should Utensil is electric toothbrush, and with fluid delivery system, which is used to transport fluid into the tooth of user.This fluid is Dentifrice, or the fluid of the interproximal cleaning for improvement.Alternatively, which may not include any bristle or its for brushing teeth His element, and can be the form of dedicated interproximal cleaning utensil.The utility model further relates to the cleaning of the cleaning appliance for tooth Tool.

Background technique

Electric toothbrush generally includes burnisher, is connected to handle.The burnisher includes bar and for tooth of brushing teeth Brush head carry bristle.The brush head includes fixing section and at least one removable section, which is connected It is connected to bar, which can be mobile relative to fixing section, such as moves back and forth, and vibrates, vibration, pivot or rotary motion In one, with assign brush teeth it is mobile to bristle mounted thereto.The bar accommodates drive shaft, the biography in the drive shaft and handle Moving cell is connected.The gear unit is connected to motor in turn, which can be driven by the battery being contained in handle.The drive The rotation of motor or vibration motion are converted to the removable section of brush head relative to brush head by moving axis and gear unit Fixing section desired movement.

A known component is incorporated into electric toothbrush, and the component is for generating stream of fluid injection for interproximal cleaning.Example Such as, 8 US, 522,384 describe a kind of electric toothbrush, and the handle of toothbrush limits fluid cavity and slide lid, which uses In storage fluid (such as water), the lid is for enabling fluid cavity to be accessed for user's supplement.Connection flow body cavity is to nozzle Fluid path is located on the fixed part of brush head.The pump in fluid path is positioned according to the use of the actuator on handle Family operates and is actuated, and liquid is pumped from fluid cavity to nozzle, for discharging under pressure from nozzle.

Utility model content

In a first aspect, the utility model provides a kind of fan component, comprising:

Liquid memory, for storing working fluid；And

Fluid delivery system, to the tooth of user, fluid delivery system includes: the jet stream for transportation work liquid

Fluid emission nozzle, including fluid cavity, fluid outlet and the channel extended between fluid cavity and fluid outlet；

For generating the device of the jet stream of working fluid from the working fluid of storage；

Fluid conduit systems, the jet stream for transportation work liquid is to nozzle；

Device is transported to the fluid cavity that aspiration fluid after user's tooth enters nozzle for the jet stream in working fluid.

The nozzle includes fluid cavity, for receiving working fluid, preferably water and channel, is used for transportation work liquid Jet stream to fluid outlet, for being transported to the tooth of user.The jet stream of per share working fluid preferably has less than the body of 1ml Product, more preferably less than 0.5ml, and is about 0.25ml in this example.The jet stream of working fluid be transported to user's tooth it Afterwards, there is the risk that the working fluid being retained in the channel of nozzle is dripped from fluid outlet.

Suction device is preferably arranged to return to fluid cavity from channel suction operation liquid.By that will retain in the channel Any working fluid is withdrawn into fluid cavity, these working fluids can be lowered from the risk that the fluid outlet of nozzle drips.It is any From channel be withdrawn into fluid cavity working fluid can with it is lower one from the jet stream of the received working fluid of fluid conduit systems in conjunction with, For being sent to the tooth of user.

Suction device be preferably arranged as aspirating when working fluid is withdrawn into fluid cavity from channel the air of a volume into Enter fluid delivery system.

In one embodiment, suction device is configured as entering fluid cavity by the fluid outlet suction air of nozzle, To both air and liquid are drawn into fluid cavity from channel.Between the supply of the jet stream of working fluid, fluid cavity can With the mixture comprising air and liquid.Instantly when the jet stream of one working fluid is generated device reception from jet stream, fluid cavity Content and received working fluid jet mixing, to form the jet stream of working fluid, including both liquid and air, Emitted from the fluid outlet of nozzle.It is located in we have found that the air for providing a volume can improve utensil removal in nozzle The performance of clast or other materials in interdental space.Working fluid being not present in a part of nozzle may make by penetrating Angular momentum in the jet stream of the working fluid of flow generator part lawsuit can generate in nozzle (with working fluid more quickly Jet stream the case where being filled substantially with water from the front nozzle that fluid conduit systems enter nozzle compare).Increase working fluid more quickly Angular momentum promotes working fluid to divide more quickly and forms divergent spray.The effect is enough with edge substantially flow direction Momentum displaces the substance in the interdental space of user's tooth by working fluid.

In another embodiment, utensil includes air intake, and air is drawn into stream by the air intake by suction device Body conveying system.Air intake can be arranged to conveying air enter jet stream generate device fluid cavity, or enter for from Jet stream generates device lawsuit liquid to the fluid conduit systems of nozzle.In the present embodiment, nozzle includes air intake, from nozzle Air outlet slit is spaced apart, and air is aspirated into nozzle by air intake, preferably enters the fluid cavity of nozzle.Air intake It is preferably arranged as conveying air independently of the liquid for being pumped into fluid cavity from channel and entering fluid cavity.For example, air intake can be with It is positioned as opposite or opposite with channel with fluid outlet, so that air is drawn into fluid cavity from side, and liquid is by from opposite side It is pumped into fluid cavity.Nozzle may include the first check valve, for preventing working fluid from passing through the transmitting of air intake.Nozzle can also wrap Second one-way valve is included, for preventing air from being drawn into fluid cavity by fluid outlet.Second one-way valve can be positioned on fluid outlet At or near.For example, fluid outlet itself can be limited by the fluid outlet of check valve, the check valve is for example duckbill valve, With normally closed position, but the jet stream of working fluid or working fluid is allowed to emit when opening from nozzle.

Suction device can be positioned in nozzle.However, suction device, which is preferably located at from jet stream generation device, extends to spray In the fluid flow path of mouth.Suction device can be positioned as adjacent with nozzle such as adjacent with fluid inlet, and the fluid enters Mouth is for receiving the jet stream of working fluid from fluid conduit systems.In a preferred embodiment, suction device is positioned as and jet stream generator Part is adjacent.Suction device can generate device from jet stream and physically be spaced apart.Such as suction device can be positioned at for direction In the conduit of the jet stream of nozzle transportation work liquid or between the section of conduit.Alternatively, suction device can be positioned at jet stream In the shell for generating device, it is located in the fluid outlet downstream that jet stream generates device, it is preferably adjacent with fluid outlet.

Suction device is preferably the form of valve.The valve preferably includes flexible member, in the first construction and the second construction Between move, fluid is withdrawn into the fluid cavity of nozzle.For example, suction device can be the form of suck back valve comprising diaphragm, Diaphragm can deform the fluid cavity that nozzle is returned to aspiration fluid between the first construction and the second construction.In preferred embodiment In, the preferably unidirectional valve of suction device, for example duckbill valve comprising one or more flexible valve members, the flexible valve member It can be moved between the first open configuration and the second closed structure.When valve member is from the first tectonic movement to the second construction, Valve member generates the low pressure of regional area, is used to aspirate fluid towards valve, and thus aspiration fluid returns to the fluid of nozzle Chamber.

Jet stream generates device and preferably includes to pump.In a preferred embodiment, it pumps as positive-displacement pump.Positive-displacement pump preferably includes to flow Body biasing member can be actuated to enter pump from liquid memory pumping liquid, and then release liquid jet from pump.? In preferred embodiment, which is the form of piston pump, and displacement of fluid component is piston wherein, can be in first position It is moved back and forth between the second position and fluid cavity is entered with pumping liquid and then releases the liquid from pump.Jet stream generates device also Including hydraulic accumulator, it is located in the downstream of pump, for storing working fluid under the pressure for example within the scope of from 3 to 10 bar. In this case, it may include valve that jet stream, which generates device, and for example solenoid valve, is located in accumulator downstream, and control circuit is matched It is set to and changes the position of valve to open position from closed position, to discharge liquid jet from accumulator.

Suction device is preferably arranged to when pump is actuated to enter pump from liquid memory suction operation liquid, suction Working fluid returns to the fluid cavity of nozzle.Suction device can be arranged in pump and be actuated with from liquid memory suction operation liquid Working fluid is prevented to be drawn into pump from fluid conduit systems while body enters pump.

Thus suction device can be arranged as executing two different functions.Suction device be preferably arranged as simultaneously (i) can Moving link, which is actuated when entering pump with the working fluid for aspirating the second volume from liquid memory, prevents working fluid by from stream Body canal is withdrawn into pump；And (ii) after the jet stream of working fluid is transported to user's tooth from channel suction operation liquid Return to fluid cavity.The single component of the fluid delivery system of utensil can be used for providing the two functions as a result,.

In second aspect, the utility model provides a kind of tooth cleaning device, comprising:

Nozzle, including fluid cavity, fluid outlet and the channel extended between fluid cavity and fluid outlet；

Liquid memory, for storing working fluid；

Pump, including displacement of fluid component can be actuated to aspirate the working fluid of a volume from liquid memory and enter Pump, and push working fluid jet stream to nozzle from pump；

Fluid conduit systems, for the jet stream towards fluid cavity transportation work liquid；And

Valve, after being transported to user's tooth for the jet stream in working fluid, (i) displacement of fluid component be actuated with The working fluid for aspirating the second volume from liquid memory prevents working fluid from being withdrawn into pump from fluid conduit systems when entering pump；With And (ii) simultaneously aspiration fluid enter fluid cavity.

Above-mentioned feature description relevant to the first aspect of the utility model is equally applicable to the second party of the utility model Face, vice versa.

Detailed description of the invention

The preferred feature of the utility model now will be only as an example, be described with reference to the drawings, in which:

Fig. 1 (a) is the right side view of tooth cleaning device, and Fig. 1 (b) is the front view of the utensil, and Fig. 1 (c) is the device The left side view of tool；

Fig. 2 schematically shows the component of fluid delivery system, the fluid delivery system is for conveying one workflow Tooth of the body to user；

Fig. 3 is the burnisher of utensil right side perspective view viewed from above；

Fig. 4 is the handle of utensil right side perspective view viewed from above；

Fig. 5 is the sectional view of the low portion of burnisher；

Fig. 6 is the perspective view of a part of the first embodiment of the fluid delivery system of utensil；

Fig. 7 a is the section of the pump of the fluid delivery system across Fig. 6 and a part of valve chest, wherein the piston pumped exists First position；And Fig. 7 b is analogous to the view of Fig. 7 a, but piston is in the second position；

Fig. 8 is the perspective view of the handle pipe-line system of the fluid delivery system of Fig. 6；

Fig. 9 is the sectional view with the upper part of the burnisher of pipe-line system of Fig. 8；

Figure 10 is the perspective view of the nozzle of pipe-line system；And

Figure 11 is the rear cross-sectional view of the fluid chamber across nozzle；

Figure 12 is the perspective view of a part of the second embodiment of the fluid delivery system of utensil；

Figure 13 is the perspective view of the handle pipe-line system of the fluid delivery system of Figure 12；And

Figure 14 is the sectional view with the upper part of the burnisher of pipe-line system of Figure 13.

Specific embodiment

Fig. 1 (a) to 1 (c) shows the external view of the embodiment of tooth cleaning device 10.In this embodiment, the device Tool is the form of hand-held instruments, is the form of electric toothbrush, with integrated package for applying with working fluid, for changing Kind interproximal cleaning.

The utensil 10 includes handle 12 and burnisher 14.The handle 12 includes external body 16, in the utensil 10 It is held during use by user.The body portion 16 is preferably molded of plastic material, and preferably general cylindrical shape.The handle 12 Including multiple user-operable buttons 18,20,22, it is located in the corresponding hole being formed in body portion 16, so that user is close. The handle 12 can include display, be located such that user is visual during utensil use.

The burnisher 14 includes bar 26 and head 28.The bar 26 is elongated shape, is used to be spaced beginning from handle 12 Portion 28, to promote the user operability of utensil 10.In this embodiment, the head of burnisher 14 includes brush unit 29 comprising brush carrier 30 and the multiple bristles 32 being installed on brush carrier 30.However, in other embodiments, it should Burnisher 14 may be provided as not having brush unit 29, so as to the form that the utensil is dedicated interproximal cleaning utensil, be used for It cleans between the gap in the tooth of user.

The burnisher 14 further includes fluid storage 34 and nozzle 36, which is used to store working fluid, The one or more strands of quick-fried teeth that flow to user of the nozzle for the transportation work fluid during the use of utensil 10.The fluid is deposited Reservoir 34 is connected to bar 26.At least partly around rod 26 extends the fluid storage 34.In this embodiment comprising brush Subelement 29, the brush unit extend at least partially about nozzle 36.

The nozzle 36 forms a part of fluid delivery system 40, for receiving working fluid from fluid storage 34, and For the quick-fried stream of working fluid to be transported to the tooth of user during 10 use of utensil.The jet stream of per share working fluid is preferred It more preferably less than 0.5ml, and is in this example about 0.25ml with the volume for being less than 1ml.The tip of nozzle 36 includes fluid Outlet 42, the quick-fried stream of working fluid are transported to the tooth of user by the fluid outlet 42.The fluid delivery system 40 is in Fig. 2 In schematically show.Generally speaking, which includes fluid inlet 44, and the fluid inlet from fluid for depositing Reservoir 34 receives working fluid.In this embodiment, which is gaseous working fluid, is preferably water.The fluid Transportation system 40 includes pump assembly 46, which is used to pass through fluid inlet 44 from 34 drawing working fluid of fluid storage, And nozzle 36 is flowed to for the quick-fried of transportation work fluid.The pump assembly 46 is located in handle 12, and including positive-displacement pump 48 and uses In the driver of transfer tube 48.Driver preferably includes motor 50.Battery 52 for supplying power to motor 50 also is located at hand In handle 12.The battery 52 is preferably rechargeable battery.

The fluid inlet 44 of fluid delivery system 40 is connected to the fluid inlet 56 of pump 48 by the first conduit 54.First valve 58 To prevent water from flowing back into fluid storage 34 from pump 48 between fluid inlet 44 and pump 48.Second conduit 60, as described below, It includes multiple sections in the present embodiment, and the fluid outlet 62 for pumping 48 is connected to nozzle 36.Second valve 64 is located at 48 Hes of pump To prevent water from flowing back into pump 48 between nozzle 36.Control circuit 66 controls actuating for motor 50, and thus motor 50 and control electricity Road 66 provides the driving force for pump operation 48.Battery 52 supplies power to control circuit 66.The control circuit 66 includes electricity Machine controller supplies power to motor 50.

In this embodiment, which receives when user presses the button on the handle 12 of utensil 10 The signal generated when 18,20,22.Alternatively, or additionally, which can receive is produced by the sensor being located in utensil Raw signal, or the signal from remote control equipment (such as display or personal device).For simplicity, in the following description, The control circuit 66 receives the signal generated as one in user's operation button 18,20,22.

Burnisher 14 is detachably connected to handle 12.With reference to Fig. 3 to 5, handle 12 includes public connector, preferably It for the form of plug 70, is received by complementary female connectors, which is preferably the recessed connector of burnisher 14 72 form.The recessed connector 72 limits general cylindrical recess portion 73, for receiving plug 70.The plug 70 is preferably from body portion 16 end surface 74 is outward and preferably prominent along the direction for the longitudinal axis for being parallel to handle 12.The end surface 74 limits Annular seating 76 is used to receive the circular bottom part wall 78 of fluid storage 34 when burnisher 14 is mounted on handle 12. The annular seating 76 includes the fluid inlet 44 of fluid delivery system 40.When burnisher 14 is mounted on handle 12, the stream Body entrance 44 receives water from the fluid storage fluid outlet port 80 of fluid storage 34.

With reference to Fig. 6, the second conduit 60 (fluid outlet 62 for pumping 48 is connected to nozzle 36 by it) includes being located in handle 12 Handle duct section 81 and the burnisher conduit section in burnisher 14.Stream of the handle duct section 81 from pump 48 Body outlet 62 extends to the handle fluid outlet port 82 for being positioned adjacent to plug 70.Burnisher conduit section 84 includes cleaning Tool fluid ingress port 86, for receiving water from handle fluid outlet port 82 when burnisher 14 is connected to handle 12. The burnisher fluid inlet port 86 is prominent from the bottom of recessed connector 72.The recessed connector 72 is accommodated in and is connected It is connected in the relatively wide bottom section 88 of bar 26.

As described above, burnisher 14 includes brush carrier 30, can be moved relative to bar portion 26.The utensil includes driving Mechanism is used for the movement for driving brush carrier 30 relative to bar 26.The driving mechanism includes that gear unit (is connected to bristle Carrier 30 as one kind) and driving unit (for driving gear unit 52 so that brush carrier 30 is moved relative to bar portion 26).

Handle 12 includes the driving unit of driving mechanism.The driving unit includes motor, preferably the form of direct current generator, The one or more of its button for pressing lower handle 12 by control circuit response user is activated.The motor of driving unit passes through gear Group is connected to rotatable drivable coupling member 90, and (it is protruded outward from plug 70, and in the motor actuation of driving unit It is rotated relative to body portion 16).

The burnisher 14 includes the gear unit of driving mechanism.Gear unit includes gear unit coupling member 92, when When burnisher 14 is connected to handle 12, which is connected and excellent with driving unit coupling member 90 Selection of land receives driving unit coupling member 70.The gear unit coupling member 92 is connected to the connecting rod 94 being contained in bar 26 One end and preferably integrally formed with the end.The other end of connecting rod 94 is connected to the side surface of brush carrier 30 to connect The Periodic Rotating of about 15 ° of angles of bar 94 causes brush carrier 30 to move relative to 15 ° of angular sweeps of bar 26.

Fluid storage 34 is mounted in the bar portion 26 of burnisher 14, and at least partly around its extension.At this In a embodiment, fluid storage 34 is annular shape, and thus surrounds bar 26.The fluid storage 34 is preferably located at bar 26 Separate head 28 end at or near, and thus in the present embodiment around rod 26 bottom section 88 extend.The fluid is deposited Reservoir 34 preferably with 5 to 50ml range capacity, and in this embodiment with 25ml capacity.

The fluid storage 34 passes through memory fluid inlet port 100 (in its outer wall for being formed in fluid storage 34) It is filled.The fluid inlet port 100 is preferably formed in the annular, outer side wall of fluid storage 34.The memory fluid Ingress port 100 is sealed by enclosed member 102.The enclosed member 102 can relative to fluid storage 34 closed position (such as Shown in Fig. 3, wherein enclosed member 102 prevent water from memory fluid inlet port 100 leak) and open position between move It is dynamic.In the present embodiment, which is pivotably connected to fluid storage 34.The enclosed member 102, which can be located at, to be deposited Water-stop is formed in reservoir fluid inlet port 100 and against vessels fluid inlet port 100.The enclosed member 102 includes Head 104 can be held by user enclosed member 102 is moved to open position from closed position, and it can be by user court It pushes to memory fluid inlet port 100 enclosed member 102 is back into closed position.

The enclosed member 102 can be connected to fluid storage 34 by a pair of of arm 106.One end quilt of each arm 106 It is connected to enclosed member 102, and the other end of each arm 106 is connected to fluid storage 34.In the present embodiment, arm 106 is integrally formed with enclosed member 102, wherein the part of the separate enclosed member 102 of each arm is connected to fluid storage The base wall 78 of device 34, such as using adhesive or pass through welding.Each arm 106 includes hinge 108, can be by arm 106 The part with local reduced thickness formed so that the part (it is connected to enclosed member 102) of arm 106 being capable of phase The other parts (it is connected to fluid storage 34) of arm 106 are pivoted.

In order to fill fluid storage 34, user dismantles burnisher 14 from handle 12, holds the head of enclosed member 102 104 are pulled outwardly between finger and thumb and by it from memory fluid inlet port 100.The fluid storage 34 then can be by User's filling, such as by being positioned at memory fluid inlet port 100 below the tap to discharge water.Once fluid storage 34 have been filled, and the head 104 of enclosed member 102 is pushed and returned in memory fluid inlet port 100 by user, and again will Burnisher 14 is connected to handle 12.When burnisher 14 is installed on handle 12, enclosed member 102 and fluid storage The meaning that being pivotally connected between 34 base wall 78 prevents enclosed member 102 when memory fluid inlet port 100 is exposed Outer loss, and the junction between enclosed member 102 and fluid storage 34 is enable to be located at handle 12 and fluid storage 34 Between.As shown in Figure 3, when enclosed member 102 is in its closed position, the lower part portion of the arm 106 of enclosed member 102 Quartile is in the recessed section of the base wall 78 of fluid storage 34, so that the bottom surface and stream of the low portion of arm 106 The base wall 78 of body memory 34 is substantially flush.

At least part of the outer wall of fluid storage 34 is preferably transparent to allow user to observe fluid storage 34 Inside, and thus utensil 10 it is expected use before estimating of fluid memory 34 whether require supplementation with.Outer wall preferably has pass In the symmetrical shape of the longitudinal axis of burnisher 14.Outer wall preferably has curved shape, more preferably convex curved shape, but Alternatively outer wall can have polygon or faceted shape.In this embodiment, outer wall has spherical.Following institute It states, fluid storage 34 is installed in the relatively wide bottom section 88 of bar 26, and thus the outer wall has opposite circular hole, To allow the bottom section 88 of bar 26 via passing through there on its longitudinal axis for being centered in burnisher 14.

Fluid storage 34 further includes inner wall 112, is connected to outer wall, and fluid storage 34 is limited together with outer wall Capacity.The inner wall 112 is tubular form.The preferably circular shape in the end of inner wall 112, and outer wall is connected to so as to outside Liquid-tight seal is formed between wall and inner wall 112.In the present embodiment, fluid storage 34 is formed by two housing parts.First Top section of the housing parts 114 including outer wall and inner wall 112, and the thus top section of the upper end of inner wall 112 and outer wall It is integrally formed.Second shell part 116 includes the compresses lower section of outer wall and the base wall 78 of fluid storage 34.

In order to which fluid storage 34 to be mounted on bar 26, it is formed in the first shell part 114 of fluid storage 34 Round hole be aligned with the free end of the bottom section 88 of bar 26, and the fluid storage 34 is pushed on bar 26.Fluid is deposited The inner surface of the inner wall 112 of reservoir 34 against bar 26 bottom section 88, so as to therebetween frictional force prevent fluid storage 34 It is fallen from bar 26.In order to which burnisher 14 to be mounted on handle 12, the plug 70 of handle 12 and it is formed in burnisher 14 Recess 73 in connector 72 is aligned, and adjacent to the cleaner of the handle fluid outlet port 82 of plug 70 and burnisher 14 Have fluid inlet port 86 to be aligned.The burnisher 14 is then pulled on plug 70, so as to the company of handle fluid outlet port 82 It is connected to burnisher fluid inlet port 86, and so that fluid storage 34 engages annular seating 76 with by memory fluid outlet Mouth 80 is connected to the fluid inlet 44 of fluid delivery system 40.Appearance of the inner surface of the connector 72 of bar 26 against plug 70 Face, so that frictional force holding rod 26 therebetween is on handle 12.The connector 72 is preferably formed by elastic plastic material, and connection is worked as Its bending is when device 72 is pulled on plug 70 to increase frictional force therebetween.Spring clip 120 can be by least partially about connector 72 are provided for promoting the inner surface of connector 72 against plug 70.

With reference to Fig. 6 and 7, the valve 58,64 of fluid delivery system is accommodated in the valve chest 122 for being connected to pump 48.Pump 48 Including pump case 123, it is formed with fluid inlet 56 and fluid outlet 62 (partially visible in figs. 7 a and 7b).The pump case 123 limit fluid cavity 124, and the fluid cavity 82 is for receiving the water across fluid inlet 56, and water passes through stream from the fluid cavity 82 It projects body outlet 62.The pump 48 includes displacement of fluid component, can enter fluid cavity relative to the movement of fluid cavity 124 to aspirate water 124, and it is then that water jet is forced to move from fluid cavity 124 towards nozzle 36.The displacement of fluid component preferably can be relative to fluid cavity 124 move back and forth.In this embodiment, which is the form of piston pump, and displacement of fluid component is piston 126 wherein, The piston can move in fluid cavity 124.Piston 126 as shown in Figure 7a, can be moved from first position along first direction, with Water is aspirated into fluid cavity 124 from fluid storage 34.Piston 126 can also be from the second position, as shown in Figure 7b, edge and first Contrary second direction movement, then to push the jet stream of water to nozzle 36 from fluid storage 36.In this embodiment In, which is relative stiffness component, can in fluid cavity 124 between position spaced linearly apart along First Line Property path it is mobile.Piston seal 127 (it can be O ring) extends around piston 126, with the shape between fluid cavity 124 and piston 126 At water-stop.Alternatively, which can be the form of diaphragm pump, and displacement of fluid component is determining 124 side of fluid cavity wherein Boundary diaphragm.In such pump, the diaphragm is movable by its bending between different configurations.Pump 48 is usually protected It holds in configuration pending, after wherein piston 126 is maintained at the water for aspirating a volume into fluid cavity 124 in fluid cavity 124 In position, thus the letter that pump assembly 46 can be emitted by the received instruction water jet of control circuit 66 from nozzle 36 with quick response Number.

First valve 58 is check valve, is located between the first conduit 54 and the fluid inlet 56 for pumping 48.In this embodiment, First valve 58 is forced against valve seat with spring-loaded ball including ball check valve, to prevent fluid in piston 126 It is moved in a second direction to be forced into the first conduit 56 when compeling exit flow from pump 48.

Second valve 64 includes check valve, is located between the second conduit 60 and the fluid outlet 62 for pumping 48.In the embodiment In, the second valve 64 includes duckbilled valve member 128, limits slot-like opening, which is usually closed by valve member 128.When When piston 126 is moved in a second direction water jet is expelled pump 48, made by the power that the water to pressurize is applied on the second valve 64 Valve member 128 deforms outward, to open slot-like opening, and water jet is allowed to be flowed into the second conduit 60.When piston 126 is along The movement of one direction, when entering fluid cavity 124 to aspirate the water of the second volume, valve member 128 is deformed inward, and slot-like opening is kept to close It closes, to prevent water to be pumped into fluid cavity 124 from the second conduit 60.

Go to Fig. 6 to 9, burnisher conduit section 84 includes fluid conduit systems 130, for by fluid from burnisher fluid Ingress port 86 is transported to nozzle 36.Nozzle 36 is installed on supporting element 132, supports nozzle 36, for relative to handle 12 and burnisher 14 bar 26 move.Supporting element 132 includes elongate body 134, is connected to bar 26, for around pivot axis P moves pivotally.For example, supporting element 132 may include cylindrical protrusions 136, it is maintained in the base portion 88 for being formed in bar 26 Between a pair recess portion spaced apart.Pivot axis P passes through bar portion 26, and is generally normal to the longitudinal axis of bar 26.Supporting element 132 For Y shape shape, there is a pair of of arm 138, upwardly extended from body portion 134, and is each connected to the phase in the body portion 142 of nozzle 36 Answer leg 140.

Nozzle 36 can move between first or distal position and second or proximal position relative to handle 12.In distal side position In setting, the end of nozzle 36 projects outwardly beyond the end of bristle 32, however in proximal position, the end of nozzle 36 relative to The end of bristle 32 retracts.In this embodiment, which is preferably biased for moving towards distal position.Fluid conduit systems 130 include relatively rigid section 144, is connected to nozzle 36 and relative flexibility section 146, is located in relatively rigid section It between 144 and burnisher fluid inlet port 86, and is accommodated in bar 26, thus in flexible deformation construction.With reference to Fig. 7, the inside power generated in the relative flexibility section 146 of fluid conduit systems 130 is acted on along a direction, by fluid conduit systems 130 Relatively rigid section 144 pushed away towards connecting rod 94.Pass through the company between fluid conduit systems 130, nozzle 36 and supporting element 132 Connect, the inside power make nozzle around pivot axis P pivot, direction be by nozzle 36 relative to brush unit 29 towards distal side position It sets and pushes away.

Fluid conduit systems 130 pass through between the leg 140 in the body portion 142 of nozzle 36, to connect the fluid inlet of nozzle 36 150.With particular reference to Fig. 9, fluid inlet 150 is tangential inlet, and fluid is tangentially transported to and is limited by the body portion 142 of nozzle 36 In fixed fluid cavity 152.In the present embodiment, fluid cavity 152 is cylindrical, and around conllinear with the longitudinal axis of nozzle 36 Longitudinal axis X extend.The diameter of fluid cavity 152 is about 4mm preferably in the range of 2 to 7mm in the present embodiment.

The body portion 142 of nozzle 36 also defines cylindrical fluid passage 154, is located in the downstream of fluid cavity 152, and Working fluid is transported to the fluid outlet 42 of nozzle 36 from fluid cavity 152.Fluid channel 154 is centered on longitudinal axis X, and And extend around longitudinal axis X.The diameter of fluid channel 154 is about preferably in the range of 1.5 to 3mm in the present embodiment 2mm.It is placed in the middle on longitudinal axis X for the fluid port 156 from 152 trandfer fluid of fluid cavity to fluid channel 154.Fluid end Mouth 156 is frustoconical shape, is assembled towards fluid channel 154.The fluid outlet 42 of nozzle 36 is also centered in longitudinal axis X On.Fluid outlet preferably have 0.5 to 1.5mm range diameter, and be about 0.7mm in this embodiment.In fluid channel 154 Transition between the fluid outlet 42 of nozzle 36 is preferably frustoconical so that fluid channel 154 and fluid outlet 42 it Between there are the relatively gentle reductions of the diameter of fluid flow path.

For operation utensil 10, user presses the button 18,20,22 on handle 12.User is by pressing lower button 18 Utensil 10 is opened, which is detected by control circuit 66.User can pass through the operation mode by the selection utensil 10 of lower button 20. For example, control circuit 66 can start motor so that brush unit 29 is mobile relative to handle 12 by primary by lower button 20.Again It is secondary to turn off motor by lower button 20.When button 22 is pressed, the activation of control circuit 66 pump 48, in a second direction by piston Water jet is expelled the fluid cavity 124 of pump 48 by movement, is passed through the second valve 64 and is entered the second conduit 60.Water jet is by Two conduits are transported to the fluid inlet of nozzle 36.Pump 48 is preferably configured to generate penetrating for water at the fluid inlet 150 of nozzle 36 Stream has the static pressure from 3 to 10 bar.When the jet stream of water enters fluid cavity 152 by fluid inlet 150, due to water jet Into being angled into for fluid cavity 152, the longitudinal axis X that the vortex of water droplet streams body cavity 152 is generated.The water droplet to turn round and round passes through Fluid port 156 and enter fluid channel 154, and then from the fluid outlet 42 of nozzle 36 with water droplet rotation cone form hair It penetrates.Pump 48 activation to generate water jet and water jet from the time between the transmitting of nozzle 36 preferably from 10ms to 50ms Range, more preferably between 15ms and 30ms.

Once water jet emits from nozzle 36, the activation of control circuit 66 pump 48 is to transport piston 126 along first direction It is dynamic, fluid cavity 124 is entered with the fluid for aspirating the second volume from fluid storage 34, is used to form subsequent water jet.Work as work Plug 126 is along first direction when moving, that is, when the fluid outlet 62 far from pump 48 moves, flexible structure of the pressure difference across the second valve 64 Part 128 is established, and makes flexible member 128 inwardly pump 48 flexure of fluid outlet 62, to be closed slot-like opening, such as Fig. 7 b It is shown.Flexible member 128 towards pump 48 fluid outlet 62 movement be located at 64 downstream of the second valve fluid delivery system 40 A part in generate the relatively low pressure of regional area, make water in a part of fluid delivery system 40 by pumpback to Second valve 64.As a result, the water being maintained in the fluid channel 154 of nozzle 36 is withdrawn into the fluid cavity 152 of nozzle 36, prevent Sealing drips during the conveying from the water jet of nozzle 36 from the fluid outlet 42 of nozzle 36.

The parameter of second valve 64, for example the size and flexibility of flexible member 128, can be selected to control and be withdrawn into spray The volume of the fluid of the fluid cavity 152 of mouth, and the meniscus for the water that thus control is located in burnisher pipe section 84 (meniscus) position.For example, it is logical in fluid that meniscus can be positioned at (i) in water jet between the conveying of utensil 10 In road 154, such as closer at the position of fluid port 156 for being positioned as fluid relative outlet 42, (ii) is in fluid cavity In 152；Or (iii) in the upstream of the fluid inlet 150 of fluid cavity 152.When meniscus is located in fluid cavity 152, or thereon The air of You Shi, the volume being pumped into nozzle 36 by fluid outlet are present in fluid cavity 152.When second strand of water When jet stream emits from pump 48, the air of the volume and the water for being forced through burnisher pipe section 84 are mixed to form workflow The jet stream of body comprising both air and water emit from the fluid outlet 42 of nozzle 36.

It is not to aspirate air by the fluid outlet 42 of nozzle 36 to enter fluid delivery system 40, air can pass through independence Air intake be introduced in fluid delivery system 40.Figure 12 to 14 shows the second of the fluid delivery system 160 of utensil 10 The component of embodiment, wherein structure identical with the first embodiment of fluid delivery system 40 is marked by identical reference label. In this second embodiment, the nozzle 36 of fluid delivery system 40 is replaced by nozzle 162, which includes air intake 164, the fluid cavity 152 of nozzle 162 is entered for conveying air.Air intake 164 is located in fluid cavity 152 and fluid port On 156 opposite sides, which enters fluid channel 154 from 152 trandfer fluid of fluid cavity.First check valve 166 It is located in air intake 164, for preventing liquid from passing through air intake 164 from fluid cavity 152.First check valve 166 includes Valve member 168 pushes against valve seat 170 from the received water jet of the second conduit 60 by nozzle, and it can be in the soft of the second valve 60 Property component 128 inwardly pump 48 fluid outlet 62 deform when move away from valve seat 170, to allow air to be drawn into fluid In chamber 152.

As shown in figure 14, the body portion 172 of nozzle 162 can limit second one-way valve at fluid outlet 174.Nozzle 162 Body portion 172 can be formed by a pair of of flexible valve member 176, limit slot-like exit 174, the slot-like exit is usually by valve member 176 closures.When water jet enters nozzle 162 from pump 48, valve is made by the power that the water to pressurize is applied on flexible member 176 176 deform outward to open fluid outlet 174, and allow to be taken out by the received water jet of nozzle and previously passed air intake 164 Enter to the fluid jet that the air in fluid cavity 152 is formed and is emitted from nozzle 162.It is soft in jet stream after the transmitting of nozzle 162 Property component 176 be deformed inward with sealing fluid outlet 174, to prevent air to be aspirated into nozzle by fluid outlet 174 162。

Claims

1. a kind of tooth cleaning device, which is characterized in that the utensil includes:

Liquid memory, for storing working fluid；And

Valve is transported to the fluid cavity that aspiration fluid after user's tooth enters nozzle for the jet stream in working fluid.

2. utensil according to claim 1, which is characterized in that the valve is configured as returning to from channel suction operation liquid In fluid cavity.

3. utensil according to claim 1, which is characterized in that the air that the valve is configured as one volume of suction enters stream Body conveying system system.

4. utensil according to claim 3, which is characterized in that the valve is configured as being aspirated when working fluid from channel When returning in fluid cavity, the air of one volume of suction enters fluid cavity.

5. utensil according to claim 3, which is characterized in that the valve is configured as aspirating by the fluid outlet of nozzle Air enters fluid cavity.

6. utensil according to claim 3, which is characterized in that the utensil includes air intake, and air is by valve by being somebody's turn to do Air intake is drawn into fluid delivery system.

7. utensil according to claim 6, which is characterized in that the nozzle includes the air intake, and the air enters Mouth is spaced apart from the air outlet slit of the nozzle.

8. utensil according to claim 7, which is characterized in that the air intake is positioned as and the fluid outlet phase It is right.

9. utensil according to claim 6, which is characterized in that the utensil includes check valve, for preventing working fluid Across the transmitting of air intake.

10. utensil according to claim 9, which is characterized in that nozzle includes second one-way valve, for preventing air from passing through Fluid outlet is drawn into fluid cavity.

11. utensil according to claim 10, which is characterized in that second one-way valve is located at or near fluid outlet.

12. utensil according to claim 10, which is characterized in that the fluid outlet of nozzle is the form of check valve.

13. utensil according to claim 10, which is characterized in that the fluid outlet includes duckbill valve.

14. utensil according to claim 1, which is characterized in that the valve is located in from jet stream generation device and extends to spray In the fluid flow path of mouth.

15. utensil according to claim 1, which is characterized in that the valve is positioned as adjacent with jet stream generation device.

16. utensil according to claim 1, which is characterized in that the valve is located in jet stream and generates in the shell of device.

17. utensil according to claim 1, which is characterized in that the fluid that the valve is positioned as generating device with jet stream goes out Mouth is adjacent.

18. utensil according to claim 1, which is characterized in that the valve includes check valve.

19. utensil according to claim 1, which is characterized in that the valve includes duckbill valve.

20. utensil according to claim 1, which is characterized in that the utensil includes handle and between handle and nozzle The bar of extension, and wherein jet stream generation device is positioned in handle.

21. utensil according to claim 1, which is characterized in that it includes positive-displacement pump that jet stream, which generates device,.

22. utensil according to claim 21, which is characterized in that the positive-displacement pump includes displacement of fluid component, can It is actuated to enter pump from liquid memory suction operation liquid, and push working fluid jet stream to nozzle from pump.

23. utensil according to claim 22, which is characterized in that the valve is arranged in displacement of fluid component and is actuated When entering pump from liquid memory suction operation liquid, suction operation liquid is returned in the fluid cavity of nozzle.

24. utensil according to claim 22, which is characterized in that the valve is arranged in displacement of fluid component and is actuated Working fluid is prevented to be withdrawn into pump from fluid conduit systems while to enter pump from liquid memory suction operation liquid.

25. a kind of tooth cleaning device, which is characterized in that the utensil includes:

Liquid memory, for storing working fluid；

Pump, including displacement of fluid component can be actuated and enter pump with the working fluid for aspirating a volume from liquid memory, and Push working fluid jet stream to nozzle from pump；

Valve after being transported to user's tooth for the jet stream in working fluid, (i) is actuated in displacement of fluid component with from liquid Working fluid is prevented to be withdrawn into pump from fluid conduit systems when the working fluid that body memory aspirates the second volume enters pump；And (ii) aspiration fluid enters fluid cavity simultaneously.